rpmrebuild 2.15-1 (stable) released

rpmrebuild is a tool to build an RPM file from a package that has already been installed.

this release fixes some bugs and improve diagnostics on errors

• fix error on rpmrebuild_files.sh line 204 (verify tag)
• use env in shebang to avoid path problemes (/bin versus /usr/bin)
• updated htmc doc (features, usage)
• avoid shebang translation for rpmrebuild packages (__brp_mangle_shebangs macro)
• fix bug on change-spec-preamble (move processing_init before CommandLineParsing) thanks Nerijus
• fix cpio problem : add --no-absolute-filenames option
• better diagnostic on internal error