Description:
------------
I like to keep my Apache config tidy so I use a different number of spaces than the auto configuration that make install adds. On 'make install' the original php5_module line is ignored  and a second one is added, and all requests to the server result in an internal server error from that point onwards.

Reproduce code:
---------------
Old Apache config line -

LoadModule php5_module modules/libphp5.so

Then -

./configure --prefix=/usr/local/php5-fcgi --with-apxs2=/usr/local/apache2/bin/apxs \
--enable-fastcgi --enable-discard-path \
--enable-memory-limit --with-layout=GNU --with-regex=php --with-mysqli --with-mysql \
--enable-cli --enable-soap --with-gd --enable-gd-native-ttf \
--with-zlib-dir=/usr --without-sqlite --disable-pdo \
--with-jpeg-dir --with-png-dir

[..]

make

[..]

make install

Expected result:
----------------
The old Apache configuration should not be overwritten.

Actual result:
--------------
'make install' adds a second 'LoadModule php5_module        modules/libphp5.so' line to the httpd.conf file, leaving the first one in place, breaking Apache's config and downing live sites.