zlib: touch the library to force a valid mtime.
zlib: touch the library to force a valid mtime.

* an unpatched ninja handles such a target as missing.

koletzky/haikuports,miqlas/haikuports,Begasus/haikuports,haikuports/haikuports,koletzky/haikuports,nielx/haikuports,Begasus/haikuports,miqlas/haikuports,nielx/haikuports,haikuports/haikuports,haikuports/haikuports,Begasus/haikuports,haikuports/haikuports,moochris/haikuports,haikuports/haikuports,moochris/haikuports,miqlas/haikuports,nielx/haikuports,koletzky/haikuports,Begasus/haikuports,Begasus/haikuports,moochris/haikuports