Patch by codebrainz for linux assistance.

Linux users, you may want to make clean
&& sh ./autogen.sh && ./configure before
running make again.

src/Makefile.am

@@ -603,6 +603,8 @@ libtomcrypt_a_CPPFLAGS = -I$(srcdir)/libtomcrypt/src/headers $(AM_CPPFLAGS)
 
 noinst_LIBRARIES += libtomcrypt.a
 
+main_CPPFLAGS = -I$(top_srcdir)/extern/jsoncpp/include
+
 main_SOURCES = $(PNG) \
 		$(Screens) \
 		$(DataStructures) \
@@ -622,6 +624,7 @@ main_LDADD = \
 		  libtomcrypt.a libtommath.a
 
 nodist_stepmania_SOURCES = ver.cpp
+stepmania_CPPFLAGS = -I$(top_srcdir)/extern/jsoncpp/include
 stepmania_SOURCES = $(main_SOURCES)
 stepmania_LDADD = $(main_LDADD)
 

src/NotesLoaderJson.cpp

@@ -1,6 +1,6 @@
 #include "global.h"
 #include "NotesLoaderJson.h"
-#include "Json/Value.h"
+#include "json/value.h"
 #include "TimingData.h"
 #include "RageUtil.h"
 #include "JsonUtil.h"

src/NotesWriterJson.cpp

@@ -1,7 +1,7 @@
 #include "global.h"
 #include "NotesWriterJson.h"
 #include "TimingData.h"
-#include "Json/Value.h"
+#include "json/value.h"
 #include "JsonUtil.h"
 #include "Song.h"
 #include "BackgroundUtil.h"