patch for correct OR and NOR gates shapes in default.svg

[Popolon]

Currently, in default.svg the right part of the OR and NOR gates shapes are like an AND gate (rounded), not like an OR gate (sharp, like current XOR and XNOR).

Here is a small patch to have correct OR and NOR shapes.

diff --git a/lib/default.svg b/lib/default.svg
index 91d7c40..5840705 100644
--- a/lib/default.svg
+++ b/lib/default.svg
@@ -114,8 +114,7 @@ line {
     <s:alias val="$logic_or"/>
     <s:alias val="$_OR_"/>
 
-    <path d="M0,25 L0,25 L15,25 A15 12.5 0 0 0 15,0 L0,0" class="$cell_id"/>
-    <path d="M0,0 A30 25 0 0 1 0,25" class="$cell_id"/>
+    <path d="M0,0 A30 25 0 0 1 0,25 A30 25 0 0 0 30,12.5 A30 25 0 0 0 0,0" class="$cell_id"/>
 
     <g s:x="2" s:y="5" s:pid="A"/>
     <g s:x="2" s:y="20" s:pid="B"/>
@@ -127,8 +126,7 @@ line {
     <s:alias val="$_NOR_"/>
     <s:alias val="$_ORNOT_"/>
 
-    <path d="M0,25 L0,25 L15,25 A15 12.5 0 0 0 15,0 L0,0" class="$cell_id"/>
-    <path d="M0,0 A30 25 0 0 1 0,25" class="$cell_id"/>
+    <path d="M0,0 A30 25 0 0 1 0,25 A30 25 0 0 0 31,12.5 A30 25 0 0 0 0,0" class="$cell_id"/>
     <circle cx="34" cy="12.5" r="3" class="$cell_id"/>
 
     <g s:x="2" s:y="5" s:pid="A"/>

[Margret Riegert]

I can incorporate this into #104. Thank you!