Fix up the uapi/linux include scheme.

In adopting this uapi header file (without kernel internals), I previously
messed up on the apparent location of the files. Thanks to Tom Gundersen for
the clarification. Also, delete the non-uapi copies of things since they
are no longer needed to build the library and tools.

Signed-off-by: Andrew G Morgan <morgan@kernel.org>
diff --git a/Make.Rules b/Make.Rules
index 9ca6c89..5b58c59 100644
--- a/Make.Rules
+++ b/Make.Rules
@@ -45,8 +45,8 @@
 
 # Compilation specifics
 
-KERNEL_HEADERS := $(topdir)/libcap/include
-IPATH += -fPIC -I$(topdir)/libcap/include -I$(KERNEL_HEADERS)
+KERNEL_HEADERS := $(topdir)/libcap/include/uapi
+IPATH += -fPIC -I$(KERNEL_HEADERS) -I$(topdir)/libcap/include
 
 CC := gcc
 CFLAGS := -O2 -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64