Added a dump of the Installation wiki page as the INSTALL file

Author: waveform80

Diff for: INSTALL

@@ -0,0 +1,56 @@
+                                  Installation
+
+Linux
+
+   Log on as a user which has SYSADM authority for the DB2 instance you wish to
+   install under (commonly this is db2inst1), and ensure the db2profile for the
+   target DB2 instance has been sourced (this is the usually the case with the
+   db2inst1 user):
+
+ $ su - db2inst1
+ $ source ~db2inst1/sqllib/db2profile
+
+   Extract the archive you downloaded, and change to the directory it creates:
+
+ $ tar -xzf db2utils-0.1.tar.gz
+ $ cd db2utils
+
+   Edit the two variables DBNAME and SCHEMANAME at the top of the Makefile:
+
+ $ ${EDITOR} Makefile
+
+   These indicate the database into which to install everything and the schema
+   under which to place all objects. Finally, use the included Makefile to make
+   the "install" target:
+
+ $ make install
+
+   This will compile the external pcre UDFs library, install it in the instance
+   identified by the DB2INSTANCE environment variable (which is set by
+   db2profile), then connect to the database identified by DBNAME and install
+   everything under the schema specified by SCHEMANAME.
+
+   If you wish to see the SQL that would be executed without actually executing
+   it (if, for example, you wish to edit it before hand) you can create it with
+   the following target:
+
+ $ make install.sql
+
+   If you wish to uninstall everything from the database, simply make the
+   "uninstall" target:
+
+ $ make uninstall
+
+   There is also a target which attempts to test the implementation of various
+   functions by running a query and comparing the output to an expected value.
+   This can be run with the "test" target:
+
+ $ make test
+
+   The tests that are executed and the expected results are in the test.dat
+   file. The test.awk script is used to convert this into an enormous SQL
+   query.
+
+Windows
+
+   Anyone want to figure this out?