FreeBSD: Allow to use short version number of preliminary packages

- simple suffix ~preXX without having to specify GIT hash.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>

freebsd/trinity.port.mk

@@ -22,7 +22,7 @@ EXTRACT_BASE=	# tarballs from nightly-builds not contains directory by name of p
 .else
 EXTRACT_BASE=	${DISTSRC}/
 .endif
-EXTRACT_AFTER_ARGS+=--transform "s|^\(${DISTSRC}\)\?|${DISTNAME}/|S" --wildcards
+EXTRACT_AFTER_ARGS+=--transform "s|^\(${DISTSRC}[^/]*\)\?|${DISTNAME}/|S" --wildcards
 
 
 ### General build options