gcc: version 4.8.3 and 4.9.0 added

config/families.d/gcc-4.8.3

@@ -0,0 +1,4 @@
+COMPILER='gcc'
+COMPILER_VERSION='4.8.3'
+
+GCC_VERSION=${COMPILER_VERSION}

config/families.d/gcc-4.9.0

@@ -0,0 +1,4 @@
+COMPILER='gcc'
+COMPILER_VERSION='4.9.0'
+
+GCC_VERSION=${COMPILER_VERSION}