Review fixes for gh-557-570-rpm-dist-man

Minor changes in cmake code style

.gitignore

@@ -23,6 +23,7 @@ RPM
 tags
 extra/txt2c
 extra/bin2c
+extra/dist/tarantoolctl.1
 cmake_install.cmake
 config.mk
 doc/www/content/docs/dev_guide.html

cmake/pod2man.cmake

 # Generate man pages of the project by using the POD header
 # written in the tool source code. To use it - include this
 # file in CMakeLists.txt and invoke
-# POD2MAN(<podfile> <manfile> <section> <center>)
-FIND_PROGRAM(POD2MAN pod2man)
+# pod2man(<podfile> <manfile> <section> <center>)
+find_program(POD2MAN pod2man)
 
-MACRO(pod2man PODFILE MANFILE SECTION OUTPATH CENTER)
-    if (NOT POD2MAN STREQUAL "POD2MAN-NOTFOUND")
-        IF(NOT EXISTS ${PODFILE})
-            message(FATAL ERROR "Could not find pod file ${PODFILE} to generate man page")
-        ENDIF(NOT EXISTS ${PODFILE})
+if(NOT POD2MAN)
+    message(STATUS "Could not find pod2man - man pages disabled")
+endif(NOT POD2MAN)
 
-        SET(OUTPATH_NEW "${PROJECT_BINARY_DIR}/${OUTPATH}")
+macro(pod2man PODFILE MANFILE SECTION OUTPATH CENTER)
+    if(NOT EXISTS ${PODFILE})
+        message(FATAL ERROR "Could not find pod file ${PODFILE} to generate man page")
+    endif(NOT EXISTS ${PODFILE})
 
-        ADD_CUSTOM_COMMAND(
+    if(POD2MAN)
+        set(OUTPATH_NEW "${PROJECT_BINARY_DIR}/${OUTPATH}")
+
+        add_custom_command(
             OUTPUT ${OUTPATH_NEW}/${MANFILE}.${SECTION}
             COMMAND ${POD2MAN} --section ${SECTION} --center ${CENTER}
-                --release --stderr --name ${MANFILE} ${PODFILE} >
+                --release --stderr --name ${MANFILE} ${PODFILE}
                 ${OUTPATH_NEW}/${MANFILE}.${SECTION}
         )
-        SET(MANPAGE_TARGET "man-${MANFILE}")
-        ADD_CUSTOM_TARGET(${MANPAGE_TARGET} ALL
+        set(MANPAGE_TARGET "man-${MANFILE}")
+        add_custom_target(${MANPAGE_TARGET} ALL
             DEPENDS ${OUTPATH_NEW}/${MANFILE}.${SECTION}
         )
-        INSTALL(
+        install(
             FILES ${OUTPATH_NEW}/${MANFILE}.${SECTION}
             DESTINATION ${CMAKE_INSTALL_MANDIR}/man${SECTION}
         )
     endif()
-ENDMACRO(pod2man PODFILE MANFILE SECTION OUTPATH CENTER)
+endmacro(pod2man PODFILE MANFILE SECTION OUTPATH CENTER)