Bug#1071684: pkg-php-tools: composer library dependency generation

[Bastian Germann]

Package: pkg-php-tools
Severity: important

The dependency generation in share/php/pkgtools/base/dependency.php for "lib-" prefixed composer dependencies needs 
fixing. I caught it by it using libpcre3, which should be libpcre2-8-0 now. But some other generated names are also 
outdated and should be brought in sync with the current php interpreter version.