small init.cpp changes (strings / Winsock init)

- add a check that requested Winsock version is available
- update some strings
- remove -gen=0 from help-message as this is default

src/init.cpp

@@ -290,8 +290,7 @@ std::string HelpMessage()
         "  -?                     " + _("This help message") + "\n" +
         "  -conf=<file>           " + _("Specify configuration file (default: bitcoin.conf)") + "\n" +
         "  -pid=<file>            " + _("Specify pid file (default: bitcoind.pid)") + "\n" +
-        "  -gen                   " + _("Generate coins") + "\n" +
-        "  -gen=0                 " + _("Don't generate coins") + "\n" +
+        "  -gen                   " + _("Generate coins (default: 0)") + "\n" +
         "  -datadir=<dir>         " + _("Specify data directory") + "\n" +
         "  -dbcache=<n>           " + _("Set database cache size in megabytes (default: 25)") + "\n" +
         "  -timeout=<n>           " + _("Specify connection timeout in milliseconds (default: 5000)") + "\n" +
@@ -358,7 +357,7 @@ std::string HelpMessage()
         "  -txindex               " + _("Maintain a full transaction index (default: 0)") + "\n" +
         "  -loadblock=<file>      " + _("Imports blocks from external blk000??.dat file") + "\n" +
         "  -reindex               " + _("Rebuild block chain index from current blk000??.dat files") + "\n" +
-        "  -par=N                 " + _("Set the number of script verification threads (up to 16, 0=auto, negative=leave N CPUs free, default: 0)") + "\n" +
+        "  -par=<n>               " + _("Set the number of script verification threads (up to 16, 0 = auto, <0 = leave that many cores free, default: 0)") + "\n" +
 
         "\n" + _("Block creation options:") + "\n" +
         "  -blockminsize=<n>      "   + _("Set minimum block size in bytes (default: 0)") + "\n" +
@@ -466,9 +465,9 @@ bool AppInit2(boost::thread_group& threadGroup)
     // Initialize Windows Sockets
     WSADATA wsadata;
     int ret = WSAStartup(MAKEWORD(2,2), &wsadata);
-    if (ret != NO_ERROR)
+    if (ret != NO_ERROR || LOBYTE(wsadata.wVersion ) != 2 || HIBYTE(wsadata.wVersion) != 2)
     {
-        return InitError(strprintf("Error: TCP/IP socket library failed to start (WSAStartup returned error %d)", ret));
+        return InitError(strprintf("Error: Winsock library failed to start (WSAStartup returned error %d)", ret));
     }
 #endif
 #ifndef WIN32
@@ -612,7 +611,7 @@ bool AppInit2(boost::thread_group& threadGroup)
     if (!fLogTimestamps)
         printf("Startup time: %s\n", DateTimeStrFormat("%Y-%m-%d %H:%M:%S", GetTime()).c_str());
     printf("Default data directory %s\n", GetDefaultDataDir().string().c_str());
-    printf("Used data directory %s\n", strDataDir.c_str());
+    printf("Using data directory %s\n", strDataDir.c_str());
     printf("Using at most %i connections (%i file descriptors available)\n", nMaxConnections, nFD);
     std::ostringstream strErrors;