Detect PathScale compiler version with its id

Decode decimal digits from

  __PATHCC__
  __PATHCC_MINOR__
  __PATHCC_PATCHLEVEL__

to compute version number components.  See documentation at:

  http://www.pathscale.com/docs/UserGuide.pdf
  http://sourceforge.net/p/predef/wiki/Compilers/#ekopathhttpenwikipediaorgwikipathscale

Modules/CMakeCCompilerId.c.in

@@ -95,8 +95,13 @@
 #  define COMPILER_VERSION_PATCH DEC(__PGIC_PATCHLEVEL__)
 # endif
 
-#elif defined(__PATHSCALE__)
+#elif defined(__PATHCC__)
 # define COMPILER_ID "PathScale"
+# define COMPILER_VERSION_MAJOR DEC(__PATHCC__)
+# define COMPILER_VERSION_MINOR DEC(__PATHCC_MINOR__)
+# if defined(__PATHCC_PATCHLEVEL__)
+#  define COMPILER_VERSION_PATCH DEC(__PATHCC_PATCHLEVEL__)
+# endif
 
 #elif defined(_CRAYC)
 # define COMPILER_ID "Cray"

Modules/CMakeCXXCompilerId.cpp.in

@@ -97,8 +97,13 @@
 #  define COMPILER_VERSION_PATCH DEC(__PGIC_PATCHLEVEL__)
 # endif
 
-#elif defined(__PATHSCALE__)
+#elif defined(__PATHCC__)
 # define COMPILER_ID "PathScale"
+# define COMPILER_VERSION_MAJOR DEC(__PATHCC__)
+# define COMPILER_VERSION_MINOR DEC(__PATHCC_MINOR__)
+# if defined(__PATHCC_PATCHLEVEL__)
+#  define COMPILER_VERSION_PATCH DEC(__PATHCC_PATCHLEVEL__)
+# endif
 
 #elif defined(_CRAYC)
 # define COMPILER_ID "Cray"