PKGBUILD-vcs.proto: strip leading "v" from git tag versions
Out of the git projects that use version tags (especially those hosted on Github), a sizable majority of them use tags that start with v (e.g. "v0.1.2"). Inexperienced AUR maintainers often neglect to strip the leading v. This change therefore sets a sensible default in the prototype file since many users do in fact use this as a reference to write PKGBUILDs.
Edited by éclairevoyant c