JNI-26 fixed include path for pEpEngine includes, according to new JNI build, + updated .hgignore

.hgignore

@@ -53,6 +53,7 @@ androidTests/build
 androidTests/.idea
 androidTests/androidTests.iml
 androidTests/app/app.iml
+android/.idea
 .gradle
 android/.externalNativeBuild
 android/android.iml

src/basic_api.cc

@@ -1,6 +1,6 @@
-#include <pEp/keymanagement.h>
-#include <pEp/blacklist.h>
-#include <pEp/sync.h>
+#include <keymanagement.h>
+#include <blacklist.h>
+#include <sync.h>
 
 #ifndef ANDROID
 #include <string.h>

src/gen_throw_pEp_exception.ysl2

@@ -24,7 +24,7 @@ tstylesheet {
     template "namespace"
         ||
         #include <assert.h>
-        #include <pEp/pEpEngine.h>
+        #include <pEpEngine.h>
         #include "throw_pEp_exception.hh"
 
         namespace pEp {