[DRE-maint] Bug#760914: ruby-haml: FTBFS: Obsolete Build-Depends on rails3

[Daniel Schepler]

Source: ruby-haml
Version: 4.0.5-1
Severity: serious

The Build-Depends for the ruby-haml source package cannot be satisfied in 
unstable, as the rails3 package is obsolete and uninstallable (see #756460).  
The package should be updated to rails 4.x.

Note that ruby-haml is on the Build-Depends chain of gem2deb.
-- 
Daniel Schepler