No need to run ldconfig in debian/postinst

Clang libraries are not distributed anymore.
Dynamically generate help message for documentation
Remove cling.pod. We will generate it from cling.pod.in
Remove static and obsolete help message
Change name of file to avoid using a .PHONY target for podgen
Do not proceed with install until cling.pod is generated
Initial metadata for cling.nsi
Add section "Mainfiles" to NSI script

Section contains a list of files to be packaged in the installer
Use solid LZMA compression in NSIS installer
Add uninstallation capabilities in cling.nsi
Generate nsi script with --current-dev=nsis and last-stable=nsis
Add "unzip" to list of requirements in Windows
Change mode of nsis directory to 775

Grant read and execute permissions to nsis executables
Use Windows style absolute paths in cling.nsi
Use valid VIProductVersion key in cling.nsi
Enable building nsis executable from cling.nsi
Add icons for NSIS installer and uninstaller
Translate Cygwin pathname to Windows format for makensis.exe
Hard code cling.exe to be included in the package
Add a mechanism to override default URL of Cling's git repo

Also handle cases where existing origin is different to the supplied origin.