test different linux optimization settings for a few cycles on the perf boxes.

configure.in

@@ -1716,7 +1716,7 @@ case "$target" in
 
 *-*linux*)
     TARGET_NSPR_MDCPUCFG='\"md/_linux.cfg\"'
-    MOZ_OPTIMIZE_FLAGS="-Os -freorder-blocks -fno-reorder-functions"
+    MOZ_OPTIMIZE_FLAGS="-Os -finline-limit=50 -freorder-blocks -fno-reorder-functions"
     MOZ_DEBUG_FLAGS="-g -fno-inline"  # most people on linux use gcc/gdb,
                                       # and that combo is not yet good at
                                       # debugging inlined functions (even