depends: Use pic for all linux dependencies

This avoids textrels, and matches previous gitian behavior.

depends/packages/bdb.mk

@@ -8,8 +8,7 @@ $(package)_build_subdir=build_unix
 define $(package)_set_vars
 $(package)_config_opts=--disable-shared --enable-cxx --disable-replication
 $(package)_config_opts_mingw32=--enable-mingw
-$(package)_config_opts_x86_64_linux=--with-pic
-$(package)_config_opts_arm_linux=--with-pic
+$(package)_config_opts_linux=--with-pic
 endef
 
 define $(package)_preprocess_cmds

depends/packages/boost.mk

@@ -22,8 +22,7 @@ $(package)_toolset_darwin=darwin
 $(package)_archiver_darwin=$($(package)_libtool)
 $(package)_config_libraries=chrono,filesystem,program_options,system,thread,test
 $(package)_cxxflags=-fvisibility=hidden
-$(package)_cxxflags_x86_64_linux=-fPIC
-$(package)_cxxflags_arm_linux=-fPIC
+$(package)_cxxflags_linux=-fPIC
 endef
 
 define $(package)_preprocess_cmds

depends/packages/freetype.mk

@@ -6,7 +6,7 @@ $(package)_sha256_hash=c0848b29d52ef3ca27ad92e08351f023c5e24ce8cea7d8fe69fc96358
 
 define $(package)_set_vars
   $(package)_config_opts=--without-zlib --without-png --disable-static
-  $(package)_config_opts_x86_64_linux=--with-pic
+  $(package)_config_opts_linux=--with-pic
 endef
 
 define $(package)_config_cmds

depends/packages/libX11.mk

@@ -7,7 +7,7 @@ $(package)_dependencies=libxcb xtrans xextproto xproto
 
 define $(package)_set_vars
 $(package)_config_opts=--disable-xkb --disable-static
-$(package)_config_opts_x86_64_linux=--with-pic
+$(package)_config_opts_linux=--with-pic
 endef
 
 define $(package)_config_cmds

depends/packages/libXau.mk

@@ -7,7 +7,7 @@ $(package)_dependencies=xproto
 
 define $(package)_set_vars
   $(package)_config_opts=--disable-shared
-  $(package)_config_opts_x86_64_linux=--with-pic
+  $(package)_config_opts_linux=--with-pic
 endef
 
 define $(package)_config_cmds

depends/packages/openssl.mk

@@ -10,12 +10,13 @@ $(package)_config_opts=--prefix=$(host_prefix) --openssldir=$(host_prefix)/etc/o
 $(package)_config_opts+=no-krb5 no-camellia no-capieng no-cast no-cms no-dtls1 no-gost no-gmp no-heartbeats no-idea no-jpake no-md2
 $(package)_config_opts+=no-mdc2 no-rc5 no-rdrand no-rfc3779 no-rsax no-sctp no-seed no-sha0 no-static_engine no-whirlpool no-rc2 no-rc4 no-ssl2 no-ssl3
 $(package)_config_opts+=$($(package)_cflags) $($(package)_cppflags)
-$(package)_config_opts_x86_64_linux=-fPIC linux-x86_64
-$(package)_config_opts_arm_linux=-fPIC linux-generic32
+$(package)_config_opts_linux=-fPIC
+$(package)_config_opts_x86_64_linux=linux-x86_64
+$(package)_config_opts_i686_linux=linux-generic32
+$(package)_config_opts_arm_linux=linux-generic32
 $(package)_config_opts_x86_64_darwin=darwin64-x86_64-cc
 $(package)_config_opts_x86_64_mingw32=mingw64
 $(package)_config_opts_i686_mingw32=mingw
-$(package)_config_opts_i686_linux=linux-generic32 -fPIC
 endef
 
 define $(package)_preprocess_cmds

depends/packages/protobuf.mk

@@ -7,7 +7,7 @@ $(package)_dependencies=native_$(package)
 
 define $(package)_set_vars
   $(package)_config_opts=--disable-shared --with-protoc=$(build_prefix)/bin/protoc
-  $(package)_config_opts_x86_64_linux=--with-pic
+  $(package)_config_opts_linux=--with-pic
 endef
 
 define $(package)_config_cmds

depends/packages/qrencode.mk

@@ -6,7 +6,7 @@ $(package)_sha256_hash=dfd71487513c871bad485806bfd1fdb304dedc84d2b01a8fb8e0940b5
 
 define $(package)_set_vars
 $(package)_config_opts=--disable-shared -without-tools --disable-sdltest
-$(package)_config_opts_x86_64_linux=--with-pic
+$(package)_config_opts_linux=--with-pic
 endef
 
 define $(package)_config_cmds

depends/packages/xcb_proto.mk

@@ -6,7 +6,7 @@ $(package)_sha256_hash=7ef40ddd855b750bc597d2a435da21e55e502a0fefa85b274f2c92280
 
 define $(package)_set_vars
   $(package)_config_opts=--disable-shared
-  $(package)_config_opts_x86_64_linux=--with-pic
+  $(package)_config_opts_linux=--with-pic
 endef
 
 define $(package)_config_cmds

depends/packages/xtrans.mk

@@ -6,7 +6,7 @@ $(package)_sha256_hash=054d4ee3efd52508c753e9f7bc655ef185a29bd2850dd9e2fc2ccc335
 $(package)_dependencies=
 
 define $(package)_set_vars
-$(package)_config_opts_x86_64_linux=--with-pic --disable-static
+$(package)_config_opts_linux=--with-pic --disable-static
 endef
 
 define $(package)_config_cmds