[MonoDevelop] Problem to build AddinAuthoring on MacOS

[Thomas Ziegler]

It is not possible to build AddinAuthoring on MacOS, cause the config is not working.
The other modules build fine.

1. [X] main
2. [X] extras/JavaBinding
3. [ ] extras/BooBinding
4. [ ] extras/ValaBinding
5. [ ] extras/AspNetEdit
6. [ ] extras/GeckoWebBrowser
7. [ ] extras/WebKitWebBrowser
8. [X] extras/MonoDevelop.Database
9. [X] extras/MonoDevelop.Profiling
10. [X] extras/MonoDevelop.AddinAuthoring
11. [X] extras/MonoDevelop.CodeAnalysis
12. [ ] extras/MonoDevelop.Debugger.Mdb
13. [ ] extras/MonoDevelop.Debugger.Gdb
14. [X] extras/PyBinding
15. [X] extras/MonoDevelop.IPhone
16. [ ] extras/MonoDevelop.MeeGo



Configuring package: main
-------------------------
Configuration options: 
Running aclocal -I /Library/Frameworks/Mono.framework/Versions/Current/share/aclocal ...
Running automake --foreign  ...
Running autoconf ...
Running ./configure --enable-maintainer-mode --enable-compile-warnings --prefix=/usr/local ...
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking how to create a ustar tar archive... gnutar
checking whether to enable maintainer-specific portions of Makefiles... yes
checking for mono... /Library/Frameworks/Mono.framework/Versions/Current/bin/mono
checking for gmcs... /Library/Frameworks/Mono.framework/Versions/Current/bin/gmcs
checking for pkg-config... /Library/Frameworks/Mono.framework/Versions/Current/bin/pkg-config
checking for msgfmt... /Library/Frameworks/Mono.framework/Versions/Current/bin/msgfmt
checking for msgmerge... /Library/Frameworks/Mono.framework/Versions/Current/bin/msgmerge
checking pkg-config is at least version 0.9.0... yes
checking for UNMANAGED_DEPENDENCIES_MONO... yes
checking for mono... /Library/Frameworks/Mono.framework/Versions/Current/bin/mono
checking for gmcs... /Library/Frameworks/Mono.framework/Versions/Current/bin/gmcs
checking for MONO_ADDINS... yes
checking for MONO_ADDINS_SETUP... yes
checking for MONO_ADDINS_GUI... yes


Configuring package: extras/MonoDevelop.AddinAuthoring
------------------------------------------------------
Configuration options: 
Looking for required packages
Checking for package 'monodevelop'.. found.
Checking for package 'gtk-sharp-2.0'.. found.
Checking for package 'mono-addins-setup'.. found.
Checking for package 'mono-addins'.. ERROR: Package named 'mono-addins' >= 0.5 not found.
Try adjusting your PKG_CONFIG_PATH environment variable.