update docs url
updated postgres, postgis, gdal, geos, v8, plv8 to latest versions
fixed the install_name_tool command to change the dylib rpath for plv8
Download, build and install json-c
fixed jasper download path and libgeos file name.
updated v8 to 3.18.2
Merge pull request #103 from spacialdb/pg92

Updated Postgres.app to latest version
Switched to a `make` based build system, bumped version to 9.3RC1.
The build scripts for PostgreSQL and dependencies have become an unmaintainable mess. Everything was stored inside the project file, making diffs totally unreadable. Now building is performed using a makefile. The `make` based workflow has been added as an external target to the Xcode project. As a result, builds should be faster, because dependencies aren't rebuilt as often any more.
Furthermore, this commit also includes an updated dylib linking script, which should be faster.
Manual merge with branch pg93, includes new build system from commit 9c6a12ae8de2a83fd0e109ff17945388a9bec621.
Bundled libtiff (see #111 and jasiek@85689c2d44a7954c44664e4bc2ebf4a93721320f)
changing .gitignore to accomodate new build workflow
- added missing makefile
- update project settings, should compile again
- updating .gitignore so i can add the new makefile
- added missing makefile
- added libtiff
- added jsonc
Merge remote-tracking branch 'origin/pg92'

The major change introduced in this merge is that I switched to a make
based build system. To change the postgresql build process, change the
makefile in src/makefile in the future. Hopefully git wil have an
easier time tracking changes in the makefile than tracking changes in
XCode project files...
Fixed build for 10.7, bumped version to 9.3.0
- ensure Lion compatibility by setting MAXOSX_DEPLOYMENT_TARGET in makefile
- fixed linking issues by changing the PREFIX variable in makefile
- updated PostgreSQL version to final release 9.3.0
- updated README file (download location, build instructions, credits)
Merge remote-tracking branch 'origin/pg93'