8233880: Support compilers with multi-digit major version numbers

Summary: Also includes JDK-8151841 version changes regressed by JDK-8034788
Reviewed-by: aph, andrew

common/autoconf/generated-configure.sh

@@ -4394,7 +4394,7 @@ VS_SDK_PLATFORM_NAME_2017=
 #CUSTOM_AUTOCONF_INCLUDE
 
 # Do not change or remove the following line, it is needed for consistency checks:
-DATE_WHEN_GENERATED=1587694859
+DATE_WHEN_GENERATED=1589212500
 
 ###############################################################################
 #
@@ -28000,7 +28000,7 @@ $as_echo "$as_me: The result from running with --version was: \"$COMPILER_VERSIO
     COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT | \
         $SED -e 's/ *Copyright .*//'`
     COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
-        $SED -e 's/^.* \([1-9]\.[0-9.]*\) .*$/\1/'`
+        $SED -e 's/^.* \([1-9][0-9]*\.[0-9.]*\) .*$/\1/'`
   elif test  "x$TOOLCHAIN_TYPE" = xclang; then
     # clang --version output typically looks like
     #    Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
@@ -29741,7 +29741,7 @@ $as_echo "$as_me: The result from running with --version was: \"$COMPILER_VERSIO
     COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT | \
         $SED -e 's/ *Copyright .*//'`
     COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
-        $SED -e 's/^.* \([1-9]\.[0-9.]*\) .*$/\1/'`
+        $SED -e 's/^.* \([1-9][0-9]*\.[0-9.]*\) .*$/\1/'`
   elif test  "x$TOOLCHAIN_TYPE" = xclang; then
     # clang --version output typically looks like
     #    Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)

common/autoconf/toolchain.m4

@@ -433,7 +433,7 @@ AC_DEFUN([TOOLCHAIN_EXTRACT_COMPILER_VERSION],
     COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT | \
         $SED -e 's/ *Copyright .*//'`
     COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
-        $SED -e 's/^.* \(@<:@1-9@:>@\.@<:@0-9.@:>@*\) .*$/\1/'`
+        $SED -e 's/^.* \(@<:@1-9@:>@@<:@0-9@:>@*\.@<:@0-9.@:>@*\) .*$/\1/'`
   elif test  "x$TOOLCHAIN_TYPE" = xclang; then
     # clang --version output typically looks like
     #    Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)