hg: macosx-port/macosx-port/jdk: Changing compiler to llvm-gcc, per <http://wikis.sun.com/display/OpenJDK/Mac+OS+X+Port+Compilers>

[swingler at apple.com]

Changeset: 3bd2ae0e98a9
Author:    swingler at apple.com
Date:      2011-04-03 22:44 -0700
URL:       http://hg.openjdk.java.net/macosx-port/macosx-port/jdk/rev/3bd2ae0e98a9

Changing compiler to llvm-gcc, per <http://wikis.sun.com/display/OpenJDK/Mac+OS+X+Port+Compilers>

! make/common/shared/Compiler-gcc.gmk
+ make/common/shared/Compiler-llvm.gmk
! make/common/shared/Defs-macosx.gmk
! make/common/shared/Defs-versions.gmk