Added a new version of pgr_vidsToDMatrix written in C that is 3X faster the plpgsql prototype.
Adding new function to doc index.
pgr_createTopology: fix cast of record to integer, improve error

Closes #210, superceeds #193
Fixes for test cases related to pull request #213
Hand merge of pull request #222 and issue #220
change packaging to not have projects folder hardcoded to c drive
Supported alphashape hole polygon case
Added alpha argument with default 0 (use optimal alpha value)
updated PostGIS versions and enabled tests for PostgreSQL 9.3
changed to stable UbuntuGIS PPA, always re-install PostgreSQL from project Apt repository
testing new APT key path
shorter purge
updated vagrant and travis scripts
PostgreSQL APT fix
fixed CMake package
enables PostgreSQL/PostGIS test matrix
removed debug output
Merge branch 'develop_issue235_1' of git://github.com/sanak/pgrouting4w into sanak-develop_issue235_1
Merge branch 'develop_issue235_2' of git://github.com/sanak/pgrouting4w into sanak-develop_issue235_2

Conflicts:
	src/driving_distance/sql/routing_dd.sql
	src/driving_distance/src/alpha_drivedist.cpp