Fix building against sqlite3

* Explicitly check for sqlite3 at configure stage, remove old include
  dir, fix header inclusion.
* Use configure results for linking instead of hardcoded linker option
  for sqlite.
* Add dependency on -dev package for .deb

Change-Id: I6d7f697d67651f02ceb77fc4da4317b64fa47f9e
Fixes: OS#1928
diff --git a/Makefile.am b/Makefile.am
index f9f5a5c..56cb4ba 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -21,7 +21,7 @@
 include $(top_srcdir)/Makefile.common
 
 ACLOCAL_AMFLAGS = -I config
-AM_CPPFLAGS = $(STD_DEFINES_AND_INCLUDES) $(USB_INCLUDES) $(WITH_INCLUDES)
+AM_CPPFLAGS = $(STD_DEFINES_AND_INCLUDES) $(USB_INCLUDES) $(WITH_INCLUDES) $(SQLITE3_CFLAGS)
 AM_CXXFLAGS = -Wall -pthread -ldl
 #AM_CXXFLAGS = -Wall -O2 -NDEBUG -pthread -ldl
 #AM_CFLAGS = -Wall -O2 -NDEBUG -pthread -ldl