Re-locate cunit, add a STYLE guideline draft and some TODO notes.

git-svn-id: http://svn.osgeo.org/postgis/trunk@3435 b70326c6-7e19-0410-871a-916f4a2858ee

STYLE

@@ -0,0 +1,58 @@
+Coding Style Guidelines for PostGIS
+-----------------------------------
+
+:Preamble:
+
+PostGIS was created over many years, by many different people, some in a 
+hurry. As a result, the existing coding style is all over the map. We 
+recognize this, and understand it will be the work of many years before
+PostGIS has a consistently named internal set of functions, but, 
+we can dream. 
+
+If new functions follow this guideline, if we do a little rennovation work
+from time to time, we will eventually get there.
+
+
+:Formatting:
+
+All C code should use an ANSI standard formatting with tabs for block 
+indenting. When not block indenting, use spaces. To convert a file
+to the standard format use:
+
+  astyle --style=ansi --indent=tab
+
+Do not get too happy with this command. If you want to re-format a file you
+are working on:
+
+ a) run astyle on it
+ b) commit
+ c) do your work
+ d) commit
+ e) if you are really finicky run astyle again
+ f) commit
+
+The idea is to avoid combining style-only commits and commits that change
+logic, so the logic commits are easier to read.
+
+Macros should be ALL_UPPERCASE. 
+Enumerations should be ALL_UPPERCASE.
+
+
+:Naming:
+
+For liblwgeom:
+
+- Files should be named with an lw prefix.
+- Functions should have an lw prefix (lw_getPoint).
+- Function names should use underscores, not camel case.
+- Function names should indicate the geometry type of inputs
+  if relevant (lwline_split)
+
+For lwgeom:
+
+- C functions called by the back-end directly (function(PG_FUNCTION_ARGS)) 
+  should be named to match their most likely SQL alias. So
+  the SQL ST_Distance(geometry) maps to the C function
+  ST_Distance(PG_FUNCTION_ARG)
+- C utility functions should be prefixed with pgis_ (lower case)
+

TODO

@@ -84,3 +84,11 @@ See,
   http://citeseer.ist.psu.edu/roussopoulos95nearest.html
   http://citeseer.ist.psu.edu/91356.html
 
+
+== Breaking Changes ==
+
+* Convert the "default SRID" from -1 to 0
+* Convert the LWGEOM struct(s) to have enough padding that the coordinates
+  are double-aligned and can be accessed directly as doubles on all
+  architectures
+

liblwgeom/cunit/Makefile

@@ -1,5 +1,5 @@
 
-LWGEOM=../liblwgeom
+LWGEOM=..
 LIBCUNIT=/usr/local/lib/libcunit.a
 LIBLWGEOM=$(LWGEOM)/liblwgeom.a