FreeBSD/ports c12220b (r480451)databases/ldb12 Makefile, games/powder-toy Makefile

Adjust USES to fix builds on gcc-bases archs.  While here, pet portlint.

Tested on powerpc64 and amd64.

Approved by:    portmgr (tier-2 blanket)
DeltaFile
+1-1databases/ldb12/Makefile
+1-1games/powder-toy/Makefile
+1-1graphics/maim/Makefile
+1-1net/haproxy-devel/Makefile
+1-1www/davix/Makefile
+1-1www/mod_security3/Makefile
+6-66 files

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