My zabbix 1.4.1/1.4.2svn fixes

[kloczek]

Here are my patches for 1.4.1/1.4.2svn with some minor fixes:

zabbix-no_libnsl.patch: function like gethostbyname() on Solaris is in libnsl but on Linux is in libc. Use proper way on autoconf level for detect is linking with libnsl is neccessary.

zabbix-use_sbin.patch: install zabbix server and agent in $(sbindir) - all this binaries are not system wide tools.

zabbix-install_conf_files.patch: add install server and agent configuration in install targert. This is also next step for allow generate full dist tar ball on release by "make dist-check".

zabbix-curl_fixes.patch: current autoconf code added cURL CFLAGS and LIBS to global list. Result: all binaries are linked with libcurl but only server binary uses this. This patch fixes this and uses much more simpler cULR detection procedure using pkg-config. Also was added display information on summary text printed by configure is cURL support is enabled.
By default cULR support is dissabled (fix this in configure --help message).
m4/libcurl.m4 can be removed

zabbix-sqlite_fixes.patch: as same as above but for sqlite3.

[kloczek]

Second part (only 5 attachemts ca be sended in one message

zabbix-as-needed.patch: zabbix isn't --as-needed linker option ready. This patch fixes this (shared libraries must be listed after all project static).
This patch also removed add databases CFLSGS and libraries list to global CFLAGS and LIBS and removes using DB_{CFLAGS,LIBS} variables so now generated binaries if will be linked without --as-needed option will be linked with only neccessary libraries.
Use common name format for libraries parameters: <foo>_LIBS and <foo>_CFLAGS.
Use some <foo>_CFLAGS only when it is neccessary (much more shorter compilation output).