Allow specifying version in depends_on :python

Note, in the explict form:

    PythonInstalled.new('2.7') => :recommended

the tag :recommended is ignored (not a limitation
of PythonInstalled itself). One solution was to write

    PythonInstalled.new('2.7', [:recommended])

but that is not as beautiful as we like it.

Therefore, now it is possible to:

    depends_on :python => ['2.7', :recommended]

Only the first tag is attempted to be parsed as
a version specifyer "x" or "x.y" or "x.y.z"...
Audit LanguageModuleDependency for python

LanguageModuleDependency.new(:python,...) is deprecated now.
Replace it by
    depends_on :python => ['module' => 'name-on-PyPi']
Fix audit warnings for python modules
libxml2: python bindings optional for OS X 10.6
cmake 2.8.11.2.

Closes #21217.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
cmake 2.8.11.2 bottles
qt 4.8.5

References #21004.
Closes #21091.
qt 4.8.5 bottles
Chipmunk 6.1.5

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
CouchPotatoServer 2.1.0

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
cpanminus 1.6923

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
dub 0.9.16

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
imapfilter 2.5.5

Closes #21244.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
omniORB 4.1.7/omniORBpy 3.7

Closes #21246.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
buildapp 1.4.8

Closes #21247.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
denominator 3.1.0

Closes #21253.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
fcgiwrap 1.1.0

Closes #21252.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
fcgiwrap: needs newer autotools
fcgiwrap: fix man page installation
fcgiwrap: add pkg-config dep