use %patch -P N instead of deprecated %patchN

jna.spec

@@ -87,13 +87,13 @@ This package contains the contributed examples for %{name}.
 %prep
 %setup -q
 cp %{SOURCE1} .
-%patch0 -p1 -b .build
-%patch1 -p1 -b .loadlib
-%patch2 -p1 -b .tests-headless
-%patch3 -p1
-%patch4 -p1
-%patch5 -p1
-%patch6 -p1
+%patch -P 0 -p1 -b .build
+%patch -P 1 -p1 -b .loadlib
+%patch -P 2 -p1 -b .tests-headless
+%patch -P 3 -p1
+%patch -P 4 -p1
+%patch -P 5 -p1
+%patch -P 6 -p1
 
 chmod -Rf a+rX,u+w,g-w,o-w .
 sed -i 's|@LIBDIR@|%{_libdir}/%{name}|' src/com/sun/jna/Native.java