Replaced hardcoded sover reference with variable.
Removed references to added manpages.
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BUG#27769 
Cleaned up some things to make building the packages go a little smoother. 
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debian/rules really does need to be called from the source root.
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Fixed two problems with the build caused by adding debian to the source tree
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Left off the debian/ prefix to the Makefile filter.
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BUG#27769 - MySQL should include debian packaging dir
Changed substitution variables to match already existing autoconf vars.
Generate debian/control and debian/defs.mk from autoconf now, since we run that
to make a source package. 
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Corrected incorrect variable name
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Renamed template files to have shorter names. 
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Moved generation of debian/control to dist-hook so make clean won't eat it.
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A few final changes to make debs build from a source tarball dist.