hg: jdk7/hotspot-rt/hotspot: 7005007: Refine use of ALT_COMPILER_PATH to avoid conflict with JPRT usage

[david.holmes at oracle.com]

Changeset: a5610f0862fe
Author:    dholmes
Date:      2010-12-09 20:12 -0500
URL:       http://hg.openjdk.java.net/jdk7/hotspot-rt/hotspot/rev/a5610f0862fe

7005007: Refine use of ALT_COMPILER_PATH to avoid conflict with JPRT usage
Summary: Check for CROSS_COMPILE_ARCH being set as an indicator to use ALT_COMPILER_PATH
Reviewed-by: acorn, ohair

! make/linux/makefiles/build_vm_def.sh
! make/linux/makefiles/gcc.make