Solve some typos (#322)

* Solve some typos

* Fix comment

* Fix lib comments:

program/c/src/oracle/model/price_model.h

@@ -47,7 +47,7 @@ price_model_scratch_footprint( uint64_t cnt ) { /* Assumes price_model_cnt_valid
    large ... typically a multiple of 3 but this is not required,
    quote[i] for i in [0,cnt) are the quotes of interest on input, p25,
    p50, p75 point to where to write model outputs, scratch points to a
-   suitable footprint srcatch region).
+   suitable footprint scratch region).
 
    Returns a pointer to the quotes sorted in ascending order.  As such,
    the min and max and any other rank statistic can be extracted easily
@@ -68,7 +68,7 @@ price_model_scratch_footprint( uint64_t cnt ) { /* Assumes price_model_cnt_valid
    worst cases.  This function uses no heap / dynamic memory allocation.
    It is thread safe provided it passed non-conflicting quote, output
    and scratch arrays.  It has a bounded call depth ~lg cnt <= ~64 (this
-   could reducd to O(1) by using a non-recursive sort/select
+   could reduce to O(1) by using a non-recursive sort/select
    implementation under the hood if desired). */
 
 int64_t *                              /* Returns pointer to sorted quotes (either quote or ALIGN_UP(scratch,int64_t)) */

program/c/src/oracle/sort/tmpl/sort_stable.c

@@ -161,7 +161,7 @@ SORT_IMPL(stable_node)( SORT_KEY_T * x,
   SORT_IDX_T k = (SORT_IDX_T)0;
 
   /* Note that nl and nr are both at least one at this point so at least
-     one interation of the loop body is necessary. */
+     one iteration of the loop body is necessary. */
 
   for(;;) { /* Minimal C language operations */
     if( SORT_BEFORE( yr[k], yl[j] ) ) {

program/c/src/oracle/util/avg.h

@@ -3,7 +3,7 @@
 
 /* Portable robust integer averaging.  (No intermediate overflow, no
    assumptions about platform type wides, no assumptions about integer
-   signed right shift, no signed integer division, no implict
+   signed right shift, no signed integer division, no implicit
    conversions, etc.) */
 
 #include "sar.h"

program/c/src/oracle/util/prng.h

@@ -15,7 +15,7 @@
 #include "hash.h" /* includes stdint.h */
 
 /* prng_t should be treated as an opaque handle of a pseudo random
-   number generator.  (It technically isn't here to faciliate inlining
+   number generator.  (It technically isn't here to facilitate inlining
    of prng operations.) */
 
 struct prng {
@@ -65,7 +65,7 @@ prng_private_contract( uint64_t seq ) {
 
    prng_new takes ownership of the memory region pointed to by mem
    (which is assumed to be non-NULL with the appropriate footprint and
-   alingment) and formats it as a prng.  The pseudo random number
+   alignment) and formats it as a prng.  The pseudo random number
    generator stream will initialized to use sequence random sequence
    "seq" and will start at index "idx".  Returns mem (which will be
    formatted for use).  The caller will not be joined to the region on

program/rust/src/lib.rs

@@ -23,19 +23,15 @@ use {
     solana_program::entrypoint,
 };
 
-// Below is a high lever description of the rust/c setup.
+// Below is a high level description of the rust/c setup.
 
-// As we migrate from C to Rust, our Rust code needs to be able to interact with C
+// As we migrate from C to Rust, our Rust code needs to be able to interact with C.
 // build-bpf.sh is set up to compile the C code into a two archive files
 // contained in `./program/c/target/`
 //  - `libcpyth-bpf.a` contains the bpf version for production code
 //  - `libcpyth-native.a` contains the systems architecture version for tests
 
-// We also generate bindings for the types and constants in oracle.h (as well as other things
-// included in bindings.h), these bindings can be accessed through c_oracle_header.rs
-// Bindings allow us to access type definitions, function definitions and constants. In order to
-// add traits to the bindings, we use the parser in build.rs. The traits must be defined/included
-// at the the top of c_oracle_headers.rs. One of the most important traits we deal are the Borsh
-// serialization traits.
+// We also generate bindings for the constants in oracle.h (as well as other things
+// included in bindings.h).
 
 entrypoint!(process_instruction);