GitLab

Conflicts:
	src/lib/asiolink/io_address.h
	src/lib/asiolink/tests/io_address_unittest.cc

 - IOAddress::increase() simplified
 - getLeasesCount renamed to getPoolCapacity
 - removed several intermediate variables

 - increaseAddress renamed to increase
 - check that addrsInRange throw when max < min
 - C++ style casts, consts added
 - check that a can be subtracted from b, when a>b
 - documentation for IOAddress::increase, subtract improved
 - couple unnecessary intermediate objects removed

Committing on my own discretion as it is an obvious error in the text.