Add warnings for autogen.sh. Fix AC_CONFIG_SRCDIR.

autogen.sh

@@ -5,4 +5,4 @@ cd "$srcdir"
 if [ -z ${LIBTOOLIZE} ] && GLIBTOOLIZE="`which glibtoolize 2>/dev/null`"; then
   export LIBTOOLIZE="${GLIBTOOLIZE}"
 fi
-autoreconf --install --force
+autoreconf --install --force --warnings=all

configure.ac

@@ -7,6 +7,8 @@ define(_CLIENT_VERSION_BUILD, 0)
 define(_CLIENT_VERSION_IS_RELEASE, false)
 define(_COPYRIGHT_YEAR, 2014)
 AC_INIT([Bitcoin Core],[_CLIENT_VERSION_MAJOR._CLIENT_VERSION_MINOR._CLIENT_VERSION_REVISION],[[email protected]],[bitcoin])
+AC_CONFIG_SRCDIR([src/main.cpp])
+AC_CONFIG_HEADERS([src/config/bitcoin-config.h])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([build-aux/m4])
 LT_INIT([disable-shared])
@@ -140,10 +142,6 @@ AC_ARG_ENABLE([glibc-back-compat],
 
 AC_ARG_WITH([protoc-bindir],[AS_HELP_STRING([--with-protoc-bindir=BIN_DIR],[specify protoc bin path])], [protoc_bin_path=$withval], [])
 
-
-AC_CONFIG_SRCDIR([src])
-AC_CONFIG_HEADERS([src/config/bitcoin-config.h])
-
 # Enable debug 
 AC_ARG_ENABLE([debug],
     [AS_HELP_STRING([--enable-debug],