Issue 49177 - Fix pkg-config file

Description:  Need to remove the slash in front of the package name

https://pagure.io/389-ds-base/issue/49177

Reviewed by: lslebodn & wibrown (Thanks!!)

Makefile.am

@@ -254,7 +254,7 @@ sampledatadir = $(datadir)@sampledatadir@
 systemschemadir = $(datadir)@systemschemadir@
 propertydir = $(datadir)@propertydir@
 schemadir = $(sysconfdir)@schemadir@
-serverdir = $(libdir)@serverdir@
+serverdir = $(libdir)/@serverdir@
 serverplugindir = $(libdir)@serverplugindir@
 taskdir = $(datadir)@scripttemplatedir@
 systemdsystemunitdir = @with_systemdsystemunitdir@
@@ -269,7 +269,7 @@ infdir = $(datadir)@infdir@
 mibdir = $(datadir)@mibdir@
 updatedir = $(datadir)@updatedir@
 pkgconfigdir = $(libdir)/pkgconfig
-serverincdir = $(includedir)@serverincdir@
+serverincdir = $(includedir)/@serverincdir@
 
 defaultuser=@defaultuser@
 defaultgroup=@defaultgroup@

configure.ac

@@ -362,9 +362,9 @@ else
   # relative to datadir
   updatedir=/$PACKAGE_NAME/updates
   # relative to libdir
-  serverdir=/$PACKAGE_NAME
+  serverdir=$PACKAGE_NAME
   # relative to includedir
-  serverincdir=/$PACKAGE_NAME
+  serverincdir=$PACKAGE_NAME
   # relative to libdir
   serverplugindir=/$PACKAGE_NAME/plugins
   # relative to datadir