docs: remove redundant retries from swig_doc.py
With proper build dependencies, it should not be needed.
Merge branch 'maint'
volk: make sure the alignment call for a block passes at least 1.
For machines with an alignment of 1, the blocks were truncating the aligment to 0. This makes sure that it gets set to a minimum of 1.
docs: fixed Doxygen from looking in the howto dir.
docs: Adding gr-fft to sphinx docs
docs: Fixing swig_doc and sphinx so that it can deal with 3.7 style.
docs: Fixed copyright in sphinx docs.
docs: Added version number to sphinx docs.
docs: Extended README for sphinx docs.
Merge remote-tracking branch 'trondeau-github/sphinxdocs' into sphinxdocs
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