64-bit build for sunos5 w/ gcc

configs/sunos5-64-gcc

+# Configuration for 64-bit SunOS 5, with gcc
+
+include $(TOP)/configs/sunos5-gcc
+
+CONFIG_NAME = sunos5-64-gcc
+
+# only set vars that differ from sunos5-gcc config
+
+OPT_FLAGS  = -O3 -m64 -mcpu=ultrasparc -mv8plus -mvis -g -fomit-frame-pointer -pipe
+
+ARCH_FLAGS = -m64