Fix the issues related to db2_pconnect and boolean value fetching.

Author: vnkbabu

CONTRIBUTING.md

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+Developers Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I have the right to submit it under the open source license indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best of my knowledge, is covered under an appropriate open source license and I have the right under that license to submit that work with modifications, whether created in whole or in part by me, under the same open source license (unless I am permitted to submit under a different license), as indicated in the file; or
+
+(c) The contribution was provided directly to me by some other person who certified (a), (b) or (c) and I have not modified it.
+
+(d) I understand and agree that this project and the contribution are public and that a record of the contribution (including all personal information I submit with it, including my sign-off) is maintained indefinitely and may be redistributed consistent with this project or the open source license(s) involved.

README

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+Procedure to install the ibm_db2 extension in Linux or Unix:
+
+1. Using the export command, set the environment variable IBM_DB_HOME:
+
+   $export IBM_DB_HOME=DB2HOME
+
+   The DB2HOME is the directory where the IBM Data Server product is installed. For example:
+
+   $ export IBM_DB_HOME=/home/db2inst1/sqllib
+
+
+2. Using one of the following three methods, install the ibm_db and pdo_ibm extensions
+   - Use the pecl install command included in the PHP Extension Community Library (PECL).
+       pecl install ibm_db2
+   - Use the commands included in the source code:
+      a) Extract the source archive
+      b) Run the following commands from the extracted directory:
+
+        $ phpize --clean
+        $ phpize
+        $ ./configure
+        $ make
+        $ make install 
+
+3. Open the php.ini file in an editor of your choice. Edit the extension entry in the
+   php.ini file in the <local_php_directory>/php/lib directory to reference the PHP driver:
+      extension=ibm_db2.so
+
+4. Ensure that the PHP driver can access the libdb2.so CLI driver file by
+   setting the LD_LIBRARY_PATH variable for Linux and UNIX operating systems
+   other than the AIX® operating system. For AIX operating system, you must set LIBPATH variable. 
+
+5. Optional: If the PHP application that is connecting to an IBM database server is running ini
+   the HTTP server environment, add the LD_LIBRARY_PATH variable in the httpd.conf file.
+
+Contributing:
+
+See CONTRIBUTING.md
+
+The developer sign-off should include the reference to the DCO in defect remarks(example below):
+DCO 1.1 Signed-off-by: Random J Developer <[email protected]>
+
+