libpcre: fix soname version.
libpcre: fix soname version.

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