Bug#362513: libxrender-dev should Depends on libx11-dev (>= 2:1.0.0)

[Sebastien Bacher <seb128@debian.org>]

Package: libxrender
Severity: important

# pkg-config --cflags --libs cairo
Package x11 was not found in the pkg-config search path.
Perhaps you should add the directory containing `x11.pc'
to the PKG_CONFIG_PATH environment variable
Package 'x11', required by 'Xrender', not found

ii  libx11-dev               6.9.0.dfsg.1-6           X Window System
protocol client library development files

That version of libx11-dev doesn't ship the required x11.pc

Updating libx11-dev fixes the issue